chmod

Description

Only root can update permissions. Type 'sudo su' and your password to sign in as root. Chande Mode

Standard

chmod a+rwx file.txt	Add read, write and execute rights for owner for file.txt
chmod g+rwx file.txt	Add read, write and execute rights for group for file.txt
chmod o+rwx file.txt	Add read, write and execute rights for other for file.txt

Permissions

chown

Description

The chown command changes ownership of files and directories in a file system.

chown root:root /etc/apt/trusted.gpg.d/microsoft.asc.gpg